Fluorescent tube



FIG. 1 is a front view of the fluorescent tube comprising my new invention;

FIG. 2 is a right side view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a bottom view thereof; and,

FIG. 6 is a base end view thereof. 

The ornamental design for a fluorescent tube, as shown. 